Question

The number of customers received by a drive-through pharmacy on Saturday mornings between 8:00 AM and 9:00 AM has a Poisson distribution with λ (Lambda) equal to 1.4. What is the probability of getting at least 2 customers between 8:00 am and 9:00 am in the morning?

Answer 1

0.4082

Explanation:

Given that the number of customers received by a drive-through pharmacy on Saturday mornings between 8:00 AM and 9:00 AM has a Poisson distribution with λ (Lambda) equal to 1.4.

X has Poisson mean=1.4

the probability of getting at least 2 customers between 8:00 am and 9:00 am in the morning

=
`P(X\geq 2)\\=0.4082`

Required probability = 0.4082